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Institute of Solid State Physics

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Solid state physics is the study of how atoms arrange themselves into solids and what properties these solids have. By examining the arrangement of the atoms and considering how electrons move among the atoms, it is possible to understand many macroscopic properties of materials such as their elasticity, electrical conductivity, or optical properties. The Institute of Solid State Physics focuses on organic, molecular, and nanostructured materials. Often detailed studies of the behavior of these materials at surfaces are made. Our research provides the foundation for important advances in technology such as energy efficient lighting, solar cells, electronic books, environmental sensors, and medical sensors.

Chemoresponsive molecules

Polymer laser

Computational Material Science

Organic plasmon-emitting diode


Solid State Seminar - Summer 2016
Wednesday 01 June 2016      PH01150

11:15 - 12:15

On the nucleation and initial film growth of rod-like organic molecules
Adolf Winkler, Institut für Festkörperphysik, TU Graz

Abstract: In this seminar, some fundamental topics related to the initial steps of organic film growth will be reviewed. General conclusions will be drawn based on experimental results obtained for the film formation of oligophenylene and pentacene molecules on gold and mica substrates. The following topics will be discussed: What are the necessary conditions to form island-like films which are either composed of flat-lying or of standing molecules? Does a wetting layer exist below and in between the islands? What is the reason behind the occasionally observed bimodal island size distribution? Can one describe the nucleation process with the diffusion-limited aggregation model? Do the impinging molecules directly adsorb on the surface or rather via a hot-precursor state? Finally, it will be described how the critical island size can be determined by an independent measurement of the deposition rate dependence of the island density and the capture-zone distribution via a universal relationship.